地ち球きゅう外がい生せい命めい体たい

noun

extraterrestrial life form

A formal or scientific term for any living organism originating outside Earth. Often used in contexts like astrobiology, science fiction, or speculative discussions about alien life.

• 科か学がく者しゃたちは地ち球きゅう外がい生せい命めい体たいの存そん在ざいを真しん剣けんに探さがしている。

  Scientists are seriously searching for the existence of extraterrestrial life forms.